Shinichirou decides to take the house keeper job suggested by his teacher in order to pay his rent; however, the person who hired him was Sakuya, a girl who is the 37th head of the Shimazu family, and her job is to exorcise and eliminate unwanted creatures. Accidentally releasing one of the creatures that Sakuya captures ,Shinichirou cooperate with her to catch it and so a story of comedic creature hunting begins!